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Generation of an anode flare in the initial stage of vacuum discharge was studied. Discharge gap was formed by a liquid-metal gallium-indium point cathode and a flat anode of the same material, with an electrode gap distance of 0.8–1 mm. The discharge was fed by pulse generator with an impedance of 50 Ohm, generating a rectangular pulse with a duration of 200 ns. Estimates show that with a charging...
The paper reports on a study of physical processes occurring in a high-current vacuum arc shunted by semiconductor devices. Dynamics of the current redistribution between the arc discharge in a vacuum circuit breaker (VCB) and an assembly of several semiconductor devices connected in parallel to the VCB is demonstrated.
A concept of a hybrid plasma source with a liquid gallium-indium propellant as a thruster for micro-satellites is proposed. Plasma source operates in two regimes: generating the laser ablation plasma and generating the plasma of low voltage vacuum arc discharge with a laser triggering. In the discharge cell of the source, the cathode is a stainless steel capillary tube filled with working liquid....
The paper presents the results on charge and energy ion distribution of heavy species of plasma generated at the anode of vacuum discharge. Liquid metal Ga-In alloy was used both as the cathode and anode material. Using an electrical circuit with a relatively low impedance (∼6 Ohm) and short inter-electrode gap (<1 mm), relatively high current (∼1 kA) was achieved in the discharge at the initial...
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